CN102928635B - A kind of simulated battery circuit for testing lithium battery protection circuit - Google Patents
A kind of simulated battery circuit for testing lithium battery protection circuit Download PDFInfo
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- CN102928635B CN102928635B CN201210430508.6A CN201210430508A CN102928635B CN 102928635 B CN102928635 B CN 102928635B CN 201210430508 A CN201210430508 A CN 201210430508A CN 102928635 B CN102928635 B CN 102928635B
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Abstract
The invention discloses a kind of simulated battery circuit for testing lithium battery protection circuit; this simulated battery circuit comprises the simulated battery main circuit of the charge-discharge characteristic for simulating lithium battery; be connected with described simulated battery main circuit and control circuit for realizing automatic test, and be connected with described simulated battery main circuit and display circuit for showing test results.In the present invention; this simulated battery circuit has that test speed is fast, precision advantages of higher; by the result of this simulated battery circuit test battery protecting plate and about the same by the result of actual battery test, actual battery can be replaced completely battery protecting plate is tested.Original actual battery tests one piece of battery protection circuit to be needed to spend even one day half a day, and tests one piece of battery protection circuit with simulated battery and only need 1 ~ 2 minute; Substantially increase efficiency.
Description
Technical field
The invention belongs to lithium battery production test field, more specifically, relating to a kind of simulated battery circuit for testing lithium battery protection circuit.
Background technology
In recent years due to the miniaturization of movable electrical appliances and universal, and Li-Ion rechargeable battery has the advantages such as small-sized, lightweight, output voltage is high, sparking voltage is stable, the storage time is long, and the Li-Ion rechargeable battery consumption of electrical matching is surged.In this kind of special electronic product such as charger, battery protecting plate; because its load is battery; to complete detection battery from the characteristic overcharging cell panel backplate the whole process being and having put; need to take long to and a complete charge and discharge process is done to battery; and the so long duration of charging obviously can make production efficiency decline; and often test also can make the shorter battery life being used to charging and discharging; and internal resistance is increased; and then affect the accuracy of test result, therefore design and aly the circuit of simulated battery can seem particularly important.
Summary of the invention
For the defect of prior art; the object of the present invention is to provide a kind of simulated battery circuit for testing lithium battery protection circuit, being intended to solve the problem needing the overlong time of cost in prior art to complete detection battery from the characteristic overcharging cell panel backplate the whole process being and having put.
The invention provides a kind of simulated battery circuit for testing lithium battery protection circuit, comprising: intending battery main circuit, for simulating the charge-discharge characteristic of lithium battery; Control circuit, is connected with described simulated battery main circuit, for realizing automatic test; And display circuit, be connected with described simulated battery main circuit; For showing test results.
Further, described simulated battery main circuit comprises: transformer, first rectifier bridge, first inductance, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity and the 7th electric capacity, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, 12 resistance, 13 resistance, 14 resistance, 15 resistance, 16 resistance, 3rd diode, 4th diode, three end adjustable shunt reference sources, first triode, second triode, 3rd triode, first operational amplifier, second operational amplifier, first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT), first rectifier bridge is connected with the secondary of transformer, and one end of the first resistance is connected with the first rectifier bridge by the first inductance, and one end of the first electric capacity is connected with the link of described first resistance and described first inductance, the other end ground connection of described first electric capacity, the other end of described first resistance is by the second resistance of being sequentially connected in series and the 3rd resistance eutral grounding, and one end of the second electric capacity is connected with the other end of described first resistance, and being connected in series to hold of the other end of the second electric capacity and the second resistance and the 3rd resistance is connected, the negative electrode of three end adjustable shunt reference sources is connected to the other end of the first resistance, the plus earth of three end adjustable shunt reference sources, and the reference voltage input terminal of three end adjustable shunt reference sources is connected with the other end of the second electric capacity, one end of 3rd electric capacity is connected with the other end of the first resistance, the other end ground connection of the 3rd electric capacity, 4th electric capacity is connected with the 3rd Capacitance parallel connection, what the inverting input of the first operational amplifier was connected to the second resistance and the 3rd resistance by the 4th resistance is connected in series end, and the inverting input of the first operational amplifier is also by the 16 resistance that is sequentially connected in series and the 5th resistance eutral grounding, 5th electric capacity is connected with the 5th resistor coupled in parallel, 16 resistance is connected with the in-phase input end of the second operational amplifier with the end that is connected in series of the 5th resistance, the in-phase input end of the first operational amplifier is all connected with one end of the 14 resistance with the inverting input of the second operational amplifier, and the other end of the 14 resistance is connected to the negative electrode of the 3rd diode, the output terminal of the first operational amplifier is connected to the base stage of the 3rd triode, the grounded emitter of the 3rd triode by the tenth resistance, the collector of the 3rd triode is connected to the negative electrode of the 4th diode, the anode of the 4th diode is connected to the negative electrode of the 3rd diode by the 15 resistance: the output terminal of the second operational amplifier is connected to the base stage of the first triode by the 6th resistance, the grounded emitter of the first triode, the collector of the first triode is connected to the base stage of the second triode by the 8th resistance, one end of 7th resistance is connected to the base stage of the second triode, and the other end of the 7th resistance is connected to the link of the first inductance and the first resistance, the emitter of the second triode is connected to the link of the first inductance and the first resistance, the collector of the second triode is connected to the anode of the 3rd diode, the negative electrode of the 3rd diode is exported by the 9th resistance, one end of 6th electric capacity is connected with the negative electrode of the 3rd diode, and the 7th electric capacity is connected with the 6th Capacitance parallel connection, the first end of the first single-pole double-throw switch (SPDT) is all connected with one end of the 14 resistance with the first end of the second single-pole double-throw switch (SPDT), second end of the first single-pole double-throw switch (SPDT) is by the 11 resistance eutral grounding, 3rd end of the first single-pole double-throw switch (SPDT) is by the 12 resistance eutral grounding, second end of the second single-pole double-throw switch (SPDT) is by the 13 resistance eutral grounding, and the 3rd end of the second single-pole double-throw switch (SPDT) is unsettled not to be connect.
Further, described 9th resistance Wei Opinions-Pictures copper wire.
Further, described control circuit comprises: for generation of the first control circuit of pulse signal and for switching normally, overcharging, cross the second control circuit put three electrical voltage points and also show test circuit in real time.
Further, described first control circuit comprises: the second counter, the 3rd counter, the 7th counter, the 8th counter, simulant electronic switch, multivibrator and peripheral circuit thereof; Multivibrator comprises 14 pins, 1st pin is connected with the 3rd pin by the 8th electric capacity, 2nd pin is connected with the 3rd pin by the 16 resistance, 6th, 14 pins connect power supply, 4th, 5,7,8,9,12 pin ground connection, 11st, 13 unsettledly not connect, the 10th pin is by the 17 resistance eutral grounding, and the 9th electric capacity is connected with the 17 resistor coupled in parallel; Second counter comprises 16 pins, simulant electronic switch comprises 14 pins, 3rd counter comprises 16 pins, 3rd pin of the second counter is unsettled not to be connect, 14th pin of the second counter is connected with the 10th pin of multivibrator, 16th pin of the second counter connects power supply, the 8th pin ground connection of the second counter; 13rd pin of the second counter is connected with the 13rd pin of simulant electronic switch; 1st pin of simulant electronic switch is by the 18 resistance eutral grounding, and the tenth electric capacity is connected with the 18 resistor coupled in parallel; 14th pin of simulant electronic switch connects power supply, the 7th pin ground connection of simulant electronic switch; 8th pin ground connection of the 3rd counter, 16th pin of the 3rd counter is connected to power supply, 15th pin of the 3rd counter is connected to the 15th pin of the second counter, 15th pin of the 3rd counter is also connected to power supply by switch, 3rd counter the 11st, 13 pins are all connected to the 5th pin of simulant electronic switch, the anode of the 8th diode is connected to power supply, and the negative electrode of the 8th diode is by the 11 electric capacity that is sequentially connected in series and the 19 resistance eutral grounding; 11 electric capacity is also connected with the 15th pin of the 3rd counter with the end that is connected in series of the 19 resistance; 7th counter and the 8th counter include 16 pins, 3rd pin, 12 pins of the 7th counter and the 8th counter are all unsettled, 8th pin ground connection, 16th pin connects power supply, 11st pin of the 7th counter, 13 pins are connected to the 6th pin of simulant electronic switch, 14th pin of the 7th counter is connected to the 4th pin and the 10th pin of simulant electronic switch, and the 15th pin of the 7th counter is connected to the 15th pin of the 3rd counter; 11st pin of the 8th counter, 13 pins are connected to the 12nd pin of simulant electronic switch, and the 14th pin of the 8th counter is connected to the 8th pin of simulant electronic switch, and the 15th pin of the 8th counter is connected to the 15th pin of the 3rd counter.
Further, described second control circuit specifically comprises: darlington transistor array, the first relay, the second relay, the 3rd relay, the 4th relay, the 5th relay, the 6th relay, the 7th relay, the 8th relay, normal resistance, overcharge resistance and overdischarge resistance, darlington transistor array comprises 18 pins, l pin is connected to the anode of the 9th light emitting diode by the 20 resistance, 2nd pin is connected to the anode of the tenth light emitting diode by the 21 resistance, 3rd pin is connected to the anode of the 11 light emitting diode by the 22 resistance, 4th pin is connected to the anode of the 12 light emitting diode by the 23 resistance, 5th pin is connected to the anode of the 13 light emitting diode by the 24 resistance, 6th pin is connected to the anode of the 14 light emitting diode by the 25 resistance, 7th pin is connected to the anode of the 15 light emitting diode by the 26 resistance, 8th pin is connected to the anode of the 16 light emitting diode by the 27 resistance, the negative electrode of the 9th light emitting diode, the negative electrode of the tenth light emitting diode, the negative electrode of the 11 light emitting diode, the negative electrode of the 12 light emitting diode, the negative electrode of the 13 light emitting diode, the negative electrode of the 14 light emitting diode, the negative electrode of the 15 light emitting diode and the equal ground connection of negative electrode of the 16 light emitting diode, 9th pin ground connection of darlington transistor array, 10th pin of darlington transistor array connects power supply, 11st pin of darlington transistor array is connected to the 1st pin of the 8th relay, 12nd pin of darlington transistor array is connected to the 1st pin of the 7th relay, 13rd pin of darlington transistor array is connected to the 1st pin of the 6th relay, 14th pin of darlington transistor array is connected to the 1st pin of the 5th relay, 15th pin of darlington transistor array is connected to the 1st pin of the 4th relay, 16th pin of darlington transistor array is connected to the l pin of the 3rd relay, 17th pin of darlington transistor array is connected to the l pin of the second relay, 18th pin of darlington transistor array is connected to the l pin of the first relay, resistance eutral grounding is overcharged described in 8th pin of the first relay passes through, 6th pin of the first relay is connected to the 4th pin of the second relay, 4th pin of the first relay meets Pl, and the 16th pin of the first relay connects power supply, the first relay the 9th, 11,13 pins are all unsettled does not connect, 6th pin of the second relay is by described normal resistance ground connection, and the 8th pin of the second relay is by described overdischarge resistance ground connection, and the 16th pin of the second relay connects power supply, the second relay the 9th, 11,13 pins are all unsettled does not connect, resistance eutral grounding is overcharged described in 8th pin of the 3rd relay passes through, 6th pin of the 3rd relay is connected to the 4th pin of the 4th relay, 4th pin of the 3rd relay meets P2, and the 16th pin of the 3rd relay connects power supply, the 3rd relay the 9th, ll, 13 pins are all unsettled does not connect, 8th pin of the 4th relay is by described overdischarge resistance ground connection, and the 6th pin of the 4th relay is by described normal resistance ground connection, and the 16th pin of the 4th relay connects power supply, the 4th relay the 9th, 11,13 pins are all unsettled does not connect, resistance eutral grounding is overcharged described in 8th pin of the 5th relay passes through, 6th pin of the 5th relay is connected to the 4th pin of the 6th relay, 4th pin of the 5th relay meets P3, and the 16th pin of the 5th relay connects power supply, the 5th relay the 9th, 1l, 13 pins are all unsettled does not connect, 8th pin of the 6th relay is by described overdischarge resistance ground connection, and the 6th pin of the 6th relay is by described normal resistance ground connection, and the 16th pin of the 5th relay connects power supply, the 6th relay the 9th, 11,13 pins are all unsettled does not connect, resistance eutral grounding is overcharged described in 8th pin of the 7th relay passes through, 6th pin of the 7th relay is connected to the 4th pin of the 8th relay, 4th pin of the 7th relay meets P4, and the 16th pin of the 7th relay connects power supply, the 7th relay the 9th, 11,13 pins are all unsettled does not connect, 8th pin of the 8th relay is by described overdischarge resistance ground connection, and the 6th pin of the 8th relay is by normal resistance ground connection, and the 16th pin of the 8th relay connects power supply, the 8th relay the 9th, 1l, 13 pins are all unsettled does not connect.
Further, described display circuit comprises: the second rectifier bridge, the second inductance, three terminal regulator, the tenth electric capacity, the 11 electric capacity, the 12 electric capacity, the 30 resistance, the 31 resistance, the 32 resistance, the 33 resistance, the 6th light emitting diode and the 7th light emitting diode; The input end of three terminal regulator is connected with the second rectifier bridge by the second inductance, and the input end of three terminal regulator is also by the tenth capacity earth, and the 11 electric capacity is connected with the tenth Capacitance parallel connection; The output terminal of three terminal regulator is connected to the electric discharge negative terminal of battery protecting plate, the output terminal of three terminal regulator is also by the first capacity earth, 31 resistance and the 30 resistance are sequentially connected in series between the output terminal and ground of three terminal regulator, and the 31 resistance is also connected with the ground end of three terminal regulator with the end that is connected in series of the 30 resistance; The plus earth of the 6th light emitting diode, the anode of the 6th light emitting diode connects the charging negative terminal of battery protecting plate by the 32 resistance; The plus earth of the 7th light emitting diode, the anode of the 6th light emitting diode is connected to the battery negative terminal of battery protecting plate by the 33 resistance.
In the present invention; this simulated battery circuit has that test speed is fast, precision advantages of higher; by the result of this simulated battery circuit test battery protecting plate and about the same by the result of actual battery test, actual battery can be replaced completely battery protecting plate is tested.Original actual battery tests one piece of battery protection circuit to be needed to spend even one day half a day, and tests one piece of battery protection circuit with simulated battery and only need 1 ~ 2 minute.Substantially increase efficiency.
Accompanying drawing explanation
Fig. 1 is the modular structure schematic diagram of a kind of simulated battery circuit for testing lithium battery protection circuit that the embodiment of the present invention provides;
Fig. 2 is the physical circuit figure of simulated battery main circuit in a kind of simulated battery circuit for testing lithium battery protection circuit of providing of the embodiment of the present invention;
Fig. 3 is the physical circuit figure of first control circuit in a kind of simulated battery circuit for testing lithium battery protection circuit of providing of the embodiment of the present invention;
Fig. 4 is the physical circuit figure of second control circuit in a kind of simulated battery circuit for testing lithium battery protection circuit of providing of the embodiment of the present invention;
Fig. 5 is the physical circuit figure of display circuit in a kind of simulated battery circuit for testing lithium battery protection circuit of providing of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In embodiments of the present invention, bother very much owing to carrying out test battery protection circuit with battery in production test procedure, require a great deal of time, this invention can replace battery and test battery protection circuit, for production test improves efficiency.
The simulated battery circuit that the embodiment of the present invention provides is mainly used in the production test of battery protecting plate; Fig. 1 shows the modular structure of this simulated battery circuit, and this simulated battery circuit comprises: simulated battery main circuit l, the control circuit 2 be connected with simulated battery main circuit 1 and the display circuit 3 be connected with simulated battery main circuit 1; Simulated battery main circuit l is for simulating the charge-discharge characteristic of lithium battery; Control circuit 2 is for realizing automatic test; Display circuit 3 is for showing test results.
In embodiments of the present invention; this simulated battery circuit has that test speed is fast, precision advantages of higher; by the result of this simulated battery circuit test battery protecting plate and about the same by the result of actual battery test, actual battery can be replaced completely battery protecting plate is tested.Original actual battery tests one piece of battery protection circuit to be needed to spend even one day half a day, and tests one piece of battery protection circuit with simulated battery and only need 1 ~ 2 minute.Substantially increase efficiency.
As shown in Figure 2, described simulated battery main circuit 1 comprises: transformer T1, first rectifier bridge Dl, first inductance L l, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6 and the 7th electric capacity C7, first resistance R1, second resistance I is settled, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11, 12 resistance R12, 13 resistance R13, 14 resistance R14, 15 resistance R15, 16 resistance R16, 3rd diode D3, 4th diode D4, three end adjustable shunt reference source D2, first triode Q1, second triode Q2, 3rd triode Q3, first operational amplifier Nl, second operational amplifier N2, first single-pole double-throw switch (SPDT) S1 and the second single-pole double-throw switch (SPDT) S2, first rectifier bridge Dl is connected with the secondary of transformer T1, one end of first resistance R1 is connected with the first rectifier bridge D1 by the first inductance L 1, one end of first electric capacity C1 is connected with the link of described first resistance R1 and described first inductance L 1, the other end ground connection of described first electric capacity C1, the other end of described first resistance R1 is by the second resistance R2 of being sequentially connected in series and the 3rd resistance R3 ground connection, one end of second electric capacity C2 is connected with the other end of described first resistance R1, and being connected in series to hold of the other end of the second electric capacity C2 and the second resistance I rubbish and the 3rd resistance R3 is connected, the negative electrode of three end adjustable shunt reference source D2 is connected to the other end of the first resistance R1, the plus earth of three end adjustable shunt reference source D2, and the reference voltage input terminal of three end adjustable shunt reference source D2 is connected with the other end of the second electric capacity C2, one end of 3rd electric capacity C3 is connected with the other end of the first resistance Rl, the other end ground connection of the 3rd electric capacity C3, 4th electric capacity C4 and the 3rd electric capacity C3 is connected in parallel, what the inverting input of the first operational amplifier N1 was connected to the second resistance R2 and the 3rd resistance R3 by the 4th resistance R4 is connected in series end, and the inverting input of the first operational amplifier Nl is also by the 16 resistance R16 that is sequentially connected in series and the 5th resistance R5 ground connection, 5th electric capacity C5 and the 5th resistance R5 is connected in parallel, 16 resistance R16 is connected with the in-phase input end of the second operational amplifier N2 with the end that is connected in series of the 5th resistance R5, the in-phase input end of the first operational amplifier N1 is all connected with one end of the 14 resistance R14 with the inverting input of the second operational amplifier N2, and the other end of the 14 resistance R14 is connected to the negative electrode of the 3rd diode D3, the output terminal of the first operational amplifier Nl is connected to the base stage of the 3rd triode Q3, the grounded emitter of the 3rd triode Q3 by the tenth resistance R10, the collector of the 3rd triode Q3 is connected to the negative electrode of the 4th diode D4, the anode of the 4th diode D4 is connected to the negative electrode of the 3rd diode D3 by the 15 resistance R15, the output terminal of the second operational amplifier N2 is connected to the base stage of the first triode Ql, the grounded emitter of the first triode Q1 by the 6th resistance R6, the collector of the first triode Ql is connected to the base stage of the second triode Q2 by the 8th resistance R8, one end of 7th resistance R7 is connected to the base stage of the second triode Q2, and the other end of the 7th resistance R7 is connected to the link of the first inductance L 1 and the first resistance R1, the emitter of the second triode 02 is connected to the link of the first inductance L 1 and the first resistance R1, the collector of the second triode 02 is connected to the anode of the 3rd diode D3, the negative electrode of the 3rd diode D3 is exported by the 9th resistance R9, one end of 6th electric capacity C6 is connected with the negative electrode of the 3rd diode D3, and the 7th electric capacity C7 and the 6th electric capacity C6 is connected in parallel, the first end of the first single-pole double-throw switch (SPDT) S1 is all connected with one end of the 14 resistance R14 with the first end of the second single-pole double-throw switch (SPDT) S2, second end of the first single-pole double-throw switch (SPDT) S1 is by the 11 resistance R11 ground connection, 3rd end of the first single-pole double-throw switch (SPDT) S1 is by the 12 resistance R12 ground connection, second end of the second single-pole double-throw switch (SPDT) S2 is by the 13 resistance R13 ground connection, and the 3rd end of the second single-pole double-throw switch (SPDT) S2 is unsettled not to be connect.Wherein, the 9th resistance R9 can be constantan wire.
In order to the simulated battery main circuit 1 that the embodiment of the present invention provides further is described, the principle of work that simulated battery main circuit 1 is now described in detail in detail is as follows:
220V civil power is after transformer T1 step-down, obtain the unstable alternating voltage of about 12V, this voltage exports DC voltage after rectifying and wave-filtering, first operational amplifier N1, second operational amplifier N2, R1-R5, R16, C2 form mu balanced circuit, it exports as stable 5V power supply, this power supply is supplied to operational amplifier first operational amplifier N1 and the second operational amplifier N2, and the power supply as the first operational amplifier N1 and the second operational amplifier N2 uses.The reference voltage input terminal of three end adjustable shunt reference source D2 is constant 2.5V, is supplied to the first operational amplifier Nl makes comparisons use as reference voltage after dividing potential drop.The output voltage of circuit feeds back to the first operational amplifier N1 and the second operational amplifier N2 after R14 and Rll, R12, R13 electric resistance partial pressure, thus controls the conducting state of the first triode Q1 and the 3rd triode Q3, makes output voltage stabilization in the value of setting.Can by regulating the 11 resistance R11, the 12 resistance R12 and the 13 resistance R13 sets the overcharged voltage driving battery protecting circuit action, overdischarge pressure and normal working voltage.Can be switched between three output voltages by the first single-pole double-throw switch (SPDT) S1 and the second single-pole double-throw switch (SPDT) S2.E+ and E-represents positive pole and the negative pole of battery.This circuit transformer isolation, easily can simulate the series connection of multistage battery, only needs the E+ on Ba Shang mono-tunnel to be connected with the E-on next road.Accomplish that every one-level is independent of each other.The electric battery of different way can be obtained according to actual needs.
Control circuit 2 comprises first control circuit and second control circuit, and first control circuit Main Function produces a series of pulse signal; Second control circuit is mainly used for switching normally, overcharges, excessively puts three electrical voltage points, and show is which is in test simultaneously at present.
As shown in Figure 3, first control circuit comprises: the second counter U2, the 3rd counter U3, the 7th counter U7, the 8th counter U8, simulant electronic switch U4, multivibrator U5 and peripheral circuit thereof; Multivibrator U5 comprises 14 pins, 1st pin is connected with the 3rd pin by the 8th electric capacity C8,2nd pin is connected with the 3rd pin by the 16 resistance R16,6th, 14 pins meet power supply VCC, 4th, 5,7,8,9,12 pin ground connection, 11st, 13 unsettledly not connect, l0 pin is by the 17 resistance R17 ground connection, and the 9th electric capacity C9 and the 17 resistance R17 is connected in parallel; Second counter U2 comprises 16 pins, simulant electronic switch U4 comprises 14 pins, 3rd counter U3 comprises 16 pins, 3rd pin of the second counter U2 is unsettled not to be connect, 14th pin of the second counter U2 is connected with the 10th pin of multivibrator U5,16th pin of the second counter U2 meets power supply VCC, the 8th pin ground connection of the second counter U2; 13rd pin of the second counter U2 is connected with the 13rd pin of simulant electronic switch U4; The l pin of simulant electronic switch U4 is by the 18 resistance R18 ground connection, and the tenth electric capacity C10 and the 18 resistance R18 is connected in parallel; 14 pins of simulant electronic switch U4 connect power supply VCC, the 7th pin ground connection of simulant electronic switch U4; The 8th pin ground connection of the 3rd counter U3,16th pin of the 3rd counter U3 is connected to power supply VCC, 15th pin of the 3rd counter U3 is connected to the 15th pin of the second counter U2,15th pin of the 3rd counter U3 is also connected to power supply VCC by switch S, 3rd counter U3 the 11st, 13 pins are all connected to the 5th pin of simulant electronic switch U4, the anode of the 8th diode D8 is connected to power supply VCC, and the negative electrode of the 8th diode D8 is by the 11 electric capacity C11 that is sequentially connected in series and the 19 resistance R19 ground connection; 11 electric capacity C11 is also connected with the 15th pin of the 3rd counter U3 with the end that is connected in series of the 19 resistance R19; 7th counter U7 and the 8th counter U8 includes 16 pins, 3rd pin, 12 pins of the 7th counter U7 and the 8th counter U8 are all unsettled, 8th pin ground connection, l6 pin meets power supply VCC, the 1l pin of the 7th counter U7,13 pins are connected to the 6th pin of simulant electronic switch U4,14th pin of the 7th counter U7 is connected to the 4th pin and the 10th pin of simulant electronic switch U4, and the 15th pin of the 7th counter U7 is connected to the 15th pin of the 3rd counter U3; The 1l pin of the 8th counter U8,13 pins are connected to the 12nd pin of simulant electronic switch U4, and the 14th pin of the 8th counter U8 is connected to the 8th pin of simulant electronic switch U4, and the 15th pin of the 8th counter U8 is connected to the 15th pin of the 3rd counter U3.
In order to the first control circuit that the embodiment of the present invention provides further is described, its principle of work is now described in detail in detail as follows:
C8 and R16 sets the oscillation frequency of multivibrator, can by the clock frequency regulating R16 to regulate counting.After switch S is pressed, all counter O reset ends are all set to height, so all counters all reset, each output terminal exports as low.After switch is upspring, 11 pin of the second counter U2 export as low, and like this, 13 pin are input as low, and the second counter U2 is in count status.13 pin of simulant electronic switch U4 export as low simultaneously, and multivibrator U5 starts vibration, the 10 pin clock signals of U5, and this clock signal delivers to the second counter U2, and now the second counter U2 starts counting.Export as time high when counting down to ll pin, at this moment the 13 pin inputs of the second counter U2 are also high, so the second counter U2 will forbid counting, keep current state, 11 pin of the second counter U2 export and are always high, so 13 pin of simulant electronic switch U4 are input as height, 1 pin and 2 pin open-minded, 14 pin of this hour counter the 3rd counter U3 are added into clock signal and start counting.Export as time high when the 3rd counter U3 count down to youngster's pin, at this moment 13 pin of the 3rd counter U3 are input as height, so the 3rd counter U3 forbids counting, keep current state, 11 pin export and are always high, so 5 pin of simulant electronic switch U4 are input as height, 3 pin and 4 pin open-minded, 14 pin of this hour counter the 7th counter U7 are added into clock signal and start counting.Export as time high when the 7th counter U7 count down to 11 pin, at this moment 13 pin of the 7th counter U7 are input as height, so the 7th counter U7 forbids counting, keep current state, ll pin exports and is always high, so 6 pin of simulant electronic switch U4 are input as height, 8 pin and 9 pin open-minded, 14 pin of this hour counter the 8th counter U8 are added into clock signal and start counting.Such second counter U2, the 3rd counter U3, the 7th counter U7, the 8th counter U8 can control 32 relay work, if control more relay, 11 pin of next road counter can be received on a upper road simulant electronic switch, be used for opening clock signal to next road counter, subsequent so successively, any number of relay of meaning multi-disc counter controls can be taken over.
As shown in Figure 4, second control circuit be mainly used for switching normal, overcharge, cross and put three electrical voltage points, also can show is which is in test simultaneously at present.Described second control circuit specifically comprises: darlington transistor array U1, the first relay, the second relay J 2, the 3rd relay J 3, the 4th relay J 4, the 5th relay J 5, the 6th relay J 6, the 7th relay J 7, the 8th relay J 8, normal resistance, overcharge resistance and overdischarge resistance;
Darlington transistor array U1 comprises 18 pins, 1st pin is connected to the anode of the 9th light emitting diode D9 by the 20 resistance R20, 2nd pin is connected to the anode of the tenth light emitting diode Dl0 by the 21 resistance R21, 3rd pin is connected to the anode of the 11 light emitting diode D11 by the 22 resistance R22, 4th pin is connected to the anode of the 12 light emitting diode D12 by the 23 resistance R23, 5th pin is connected to the anode of the 13 light emitting diode D13 by the 24 resistance R24, 6th pin is connected to the anode of the 14 light emitting diode D14 by the 25 resistance R25, 7th pin is connected to the anode of the 15 light emitting diode D15 by the 26 resistance R26, 8th pin is connected to the anode of the 16 light emitting diode D16 by the 27 resistance R27, the negative electrode of the 9th light emitting diode D9, the negative electrode of the tenth light emitting diode Dl0, the negative electrode of the 11 light emitting diode D11, the negative electrode of the 12 light emitting diode D12, the negative electrode of the 13 light emitting diode D13, the negative electrode of the 14 light emitting diode D14, the negative electrode of the 15 light emitting diode D15 and the equal ground connection of negative electrode of the 16 light emitting diode D16, the 9th pin ground connection of darlington transistor array U1, the l0 pin of darlington transistor array U1 meets power supply VCC, the ll pin of darlington transistor array U1 is connected to the 1st pin of the 8th relay J 8, 12nd pin of darlington transistor array U1 is connected to the 1st pin of the 7th relay J 7, 13rd pin of darlington transistor array U1 is connected to the 1st pin of the 6th relay J 6, 14th pin of darlington transistor array U1 is connected to the 1st pin of the 5th relay J 5, 15th pin of darlington transistor array U1 is connected to the 1st pin of the 4th relay J 4, 16th pin of darlington transistor array U1 is connected to the 1st pin of the 3rd relay J 3, 17th pin of darlington transistor array U1 is connected to the 1st pin of the second relay J 2, 18th pin of darlington transistor array U1 is connected to the l pin of the first relay J 1,
Resistance eutral grounding is overcharged described in 8th pin of the first relay J 1 passes through, 6th pin of the first relay J l is connected to the 4th pin of the second relay J 2,4th pin of the first relay J 1 meets P1,16th pin of the first relay J 1 meets power supply VCC, the first relay J 1 the 9th, 11,13 pins are all unsettled does not connect; 6th pin of the second relay J 2 is by described normal resistance ground connection, and the 8th pin of the second relay J 2 is by described overdischarge resistance ground connection, and the 16th pin of the second relay J 2 meets power supply VCC, the second relay J 2 the 9th, 11,13 pins are all unsettled does not connect; Resistance eutral grounding is overcharged described in 8th pin of the 3rd relay J 3 passes through, 6th pin of the 3rd relay J 3 is connected to the 4th pin of the 4th relay J 4,4th pin of the 3rd relay J 3 meets P2,16th pin of the 3rd relay J 3 meets power supply VCC, the 3rd relay J 3 the 9th, 11,13 pins are all unsettled does not connect; 8th pin of the 4th relay J 4 is by described overdischarge resistance ground connection, and the 6th pin of the 4th relay J 4 is by described normal resistance ground connection, and the 16th pin of the 4th relay J 4 meets power supply VCC, the 4th relay J 4 the 9th, 11,13 pins are all unsettled does not connect; Resistance eutral grounding is overcharged described in 8th pin of the 5th relay J 5 passes through, 6th pin of the 5th relay J 5 is connected to the 4th pin of the 6th relay J 6,4th pin of the 5th relay J 5 meets P3,16th pin of the 5th relay J 5 meets power supply VCC, the 5th relay J 5 the 9th, 11,13 pins are all unsettled does not connect; 8th pin of the 6th relay J 6 is by described overdischarge resistance ground connection, and the 6th pin of the 6th relay J 6 is by described normal resistance ground connection, and the 16th pin of the 5th relay J 5 meets power supply VCC, the 6th relay J 6 the 9th, 11,13 pins are all unsettled does not connect; Resistance eutral grounding is overcharged described in 8th pin of the 7th relay J 7 passes through, 6th pin of the 7th relay J 7 is connected to the 4th pin of the 8th relay J 8,4th pin of the 7th relay J 7 meets P4,16th pin of the 7th relay J 7 meets power supply VCC, the 7th relay J 7 the 9th, 11,13 pins are all unsettled does not connect; 8th pin of the 8th relay J 8 is by described overdischarge resistance ground connection, and the 6th pin of the 8th relay J 8 is by normal resistance ground connection, and the 16th pin of the 8th relay J 8 meets power supply VCC, the 8th relay J 8 the 9th, 11, l3 pin is all unsettled does not connect.P1, P2, P3, P4 corresponding moved end of receiving single-pole double-throw switch (SPDT) in each road simulated battery main circuit respectively in this figure.
In order to the second control circuit that the embodiment of the present invention provides further is described, its principle of work is now described in detail in detail as follows:
J1 ~ J8 is relay, relay work is driven by darlington transistor array U1, P1 ~ P4 is connected on the position of each road simulated battery main circuit single-pole double-throw switch (SPDT) respectively, this circuit relay electrical equipment is exactly the single-pole double-throw switch (SPDT) in simulated battery main circuit, and 1 pin ~ 8 pin of Darlington transistor U1 receives the output terminal of first control circuit Counter simultaneously respectively.The resistance that label is " normally " connected by the single-pole double-throw switch (SPDT) of each road simulated battery main circuit under normal circumstances, light all light emitting diodes simultaneously, the actuating of relay when first trigger pip arrives, now the resistance that label is " overcharging " connected by first via simulated battery main circuit single-pole double-throw switch (SPDT), when second trigger pip arrives, the resistance that label is " cross and put " connected by first via simulated battery main circuit single-pole double-throw switch (SPDT), such darlington transistor array U1 can drive 8 relay work, 8 relays can switch 4 road simulated battery circuit workings.If desired more string simulated battery circuit workings only need this circuit copied in order access main circuit both can.
As shown in Figure 5, described display circuit comprises: the second rectifier bridge D5, the second inductance L 2, three terminal regulator U6, the tenth electric capacity C10, the 11 electric capacity C11, the 12 electric capacity C12, the 30 resistance R30, the 31 resistance R31, the 32 resistance R32, the 33 resistance R33, the 6th light emitting diode D6 and the 7th light emitting diode D7;
The input end Vin of three terminal regulator U6 is connected with the second rectifier bridge D5 by the second inductance L 2, and the input end Vin of three terminal regulator U6 holds also by the tenth electric capacity C10 ground connection, and the 11 electric capacity C11 and the tenth electric capacity C10 is connected in parallel;
The output end vo ut of three terminal regulator U6 is connected to the electric discharge negative terminal D-of battery protecting plate, the output end vo ut of three terminal regulator U6 is also by the first electric capacity C12 ground connection, 31 resistance R3l and the 30 resistance R30 is sequentially connected in series between the output end vo ut and ground of three terminal regulator U6, and the 31 resistance R31 is also connected with the ground end GND of three terminal regulator U6 with the end that is connected in series of the 30 resistance R30; The plus earth of the 6th light emitting diode D6, the anode of the 6th light emitting diode D6 connects the charging negative terminal C-of battery protecting plate by the 32 resistance R32; The plus earth of the 7th light emitting diode D7, the anode of the 6th light emitting diode D6 is connected to the battery negative terminal B-of battery protecting plate by the 33 resistance R33.
In order to the display circuit 3 that the embodiment of the present invention provides further is described, its principle of work is now described in detail in detail as follows:
12V is input to three terminal regulator U6 after rectifying and wave-filtering, by the voltage of three terminal regulator U6 stable output.B-, C-, D-be corresponding three lines receiving the battery negative terminal above battery protecting plate, the negative terminal that charges, electric discharge negative terminal respectively.If battery protecting plate function is normal, will different reactions be had when receiving different voltage signals, controlling the discharge and recharge to battery by the power MOSFET opened or turn off on battery protecting plate.Like this when normal operating conditions, two light emitting diodes all can be lighted, and when being in over-charge protective or Cross prevention, corresponding light emitting diode will knock out.So just interpretation can go out test result easily.
In embodiments of the present invention; this simulated battery circuit has that test speed is fast, precision advantages of higher; by the result of this simulated battery circuit test battery protecting plate and about the same by the result of actual battery test, actual battery can be replaced completely battery protecting plate is tested.Original actual battery tests one piece of battery protection circuit to be needed to spend even one day half a day, and tests one piece of battery protection circuit with simulated battery and only need 1 ~ 2 minute.Substantially increase efficiency.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., for testing a simulated battery circuit for lithium battery protection circuit, it is characterized in that, comprise:
Simulated battery main circuit, for simulating the charge-discharge characteristic of lithium battery;
Control circuit, is connected with described simulated battery main circuit, for realizing automatic test; And
Display circuit, is connected with described simulated battery main circuit; For showing test results;
Wherein, described simulated battery main circuit comprises: transformer, first rectifier bridge, first inductance, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity and the 7th electric capacity, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, 12 resistance, 13 resistance, 14 resistance, 15 resistance, 16 resistance, 3rd diode, 4th diode, three end adjustable shunt reference sources, first triode, second triode, 3rd triode, first operational amplifier, second operational amplifier, first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT),
First rectifier bridge is connected with the secondary of transformer, and one end of the first resistance is connected with the first rectifier bridge by the first inductance, and one end of the first electric capacity is connected with the link of described first resistance and described first inductance, the other end ground connection of described first electric capacity; The other end of described first resistance is by the second resistance of being sequentially connected in series and the 3rd resistance eutral grounding, and one end of the second electric capacity is connected with the other end of described first resistance, and being connected in series to hold of the other end of the second electric capacity and the second resistance and the 3rd resistance is connected;
The negative electrode of three end adjustable shunt reference sources is connected to the other end of the first resistance, the plus earth of three end adjustable shunt reference sources, and the reference voltage input terminal of three end adjustable shunt reference sources is connected with the other end of the second electric capacity;
One end of 3rd electric capacity is connected with the other end of the first resistance, the other end ground connection of the 3rd electric capacity; 4th electric capacity is connected with the 3rd Capacitance parallel connection;
What the inverting input of the first operational amplifier was connected to the second resistance and the 3rd resistance by the 4th resistance is connected in series end, and the inverting input of the first operational amplifier is also by the 16 resistance that is sequentially connected in series and the 5th resistance eutral grounding; 5th electric capacity is connected with the 5th resistor coupled in parallel; 16 resistance is connected with the in-phase input end of the second operational amplifier with the end that is connected in series of the 5th resistance; The in-phase input end of the first operational amplifier is all connected with one end of the 14 resistance with the inverting input of the second operational amplifier, and the other end of the 14 resistance is connected to the negative electrode of the 3rd diode; The output terminal of the first operational amplifier is connected to the base stage of the 3rd triode, the grounded emitter of the 3rd triode by the tenth resistance, the collector of the 3rd triode is connected to the negative electrode of the 4th diode; The anode of the 4th diode is connected to the negative electrode of the 3rd diode by the 15 resistance; The output terminal of the second operational amplifier is connected to the base stage of the first triode, the grounded emitter of the first triode by the 6th resistance, the collector of the first triode is connected to the base stage of the second triode by the 8th resistance; One end of 7th resistance is connected to the base stage of the second triode, and the other end of the 7th resistance is connected to the link of the first inductance and the first resistance; The emitter of the second triode is connected to the link of the first inductance and the first resistance; The collector of the second triode is connected to the anode of the 3rd diode; The negative electrode of the 3rd diode is exported by the 9th resistance; One end of 6th electric capacity is connected with the negative electrode of the 3rd diode, and the 7th electric capacity is connected with the 6th Capacitance parallel connection;
The first end of the first single-pole double-throw switch (SPDT) is all connected with one end of the 14 resistance with the first end of the second single-pole double-throw switch (SPDT), second end of the first single-pole double-throw switch (SPDT) is by the 11 resistance eutral grounding, 3rd end of the first single-pole double-throw switch (SPDT) is by the 12 resistance eutral grounding, second end of the second single-pole double-throw switch (SPDT) is by the 13 resistance eutral grounding, and the 3rd end of the second single-pole double-throw switch (SPDT) is unsettled not to be connect.
2. simulated battery circuit as claimed in claim 1, is characterized in that, described 9th resistance is Opinions-Pictures copper wire.
3. simulated battery circuit as claimed in claim 1, it is characterized in that, described control circuit comprises: for generation of the first control circuit of pulse signal and for switching normally, overcharging, cross the second control circuit put three electrical voltage points and also show test circuit in real time.
4. simulated battery circuit as claimed in claim 3, it is characterized in that, described first control circuit comprises: the second counter, the 3rd counter, the 7th counter, the 8th counter, simulant electronic switch, multivibrator and peripheral circuit thereof;
Multivibrator comprises 14 pins, 1st pin is connected with the 3rd pin by the 8th electric capacity, 2nd pin is connected with the 3rd pin by the 16 resistance, 6th, 14 pins connect power supply, 4th, 5,7,8,9,12 pin ground connection, 11st, 13 unsettledly not connect, the 10th pin is by the 17 resistance eutral grounding, and the 9th electric capacity is connected with the 17 resistor coupled in parallel;
Second counter comprises 16 pins, simulant electronic switch comprises 14 pins, 3rd counter comprises 16 pins, 3rd pin of the second counter is unsettled not to be connect, 14th pin of the second counter is connected with the 10th pin of multivibrator, 16th pin of the second counter connects power supply, the 8th pin ground connection of the second counter; 13rd pin of the second counter is connected with the 13rd pin of simulant electronic switch; 1st pin of simulant electronic switch is by the 18 resistance eutral grounding, and the tenth electric capacity is connected with the 18 resistor coupled in parallel; 14th pin of simulant electronic switch connects power supply, the 7th pin ground connection of simulant electronic switch; 8th pin ground connection of the 3rd counter, 16th pin of the 3rd counter is connected to power supply, 15th pin of the 3rd counter is connected to the 15th pin of the second counter, 15th pin of the 3rd counter is also connected to power supply by switch, 3rd counter the 11st, 13 pins are all connected to the 5th pin of simulant electronic switch, the anode of the 8th diode is connected to power supply, and the negative electrode of the 8th diode is by the 11 electric capacity that is sequentially connected in series and the 19 resistance eutral grounding; 11 electric capacity is also connected with the 15th pin of the 3rd counter with the end that is connected in series of the 19 resistance;
7th counter and the 8th counter include 16 pins, 3rd pin, 12 pins of the 7th counter and the 8th counter are all unsettled, 8th pin ground connection, 16th pin connects power supply, 11st pin of the 7th counter, 13 pins are connected to the 6th pin of simulant electronic switch, 14th pin of the 7th counter is connected to the 4th pin and the 10th pin of simulant electronic switch, and the 15th pin of the 7th counter is connected to the 15th pin of the 3rd counter; 11st pin of the 8th counter, 13 pins are connected to the 12nd pin of simulant electronic switch, and the 14th pin of the 8th counter is connected to the 8th pin of simulant electronic switch, and the 15th pin of the 8th counter is connected to the 15th pin of the 3rd counter.
5. simulated battery circuit as claimed in claim 3, it is characterized in that, described second control circuit specifically comprises: darlington transistor array, the first relay, the second relay, the 3rd relay, the 4th relay, the 5th relay, the 6th relay, the 7th relay, the 8th relay, normal resistance, overcharge resistance and overdischarge resistance;
Darlington transistor array comprises 18 pins, 1st pin is connected to the anode of the 9th light emitting diode by the 20 resistance, 2nd pin is connected to the anode of the tenth light emitting diode by the 21 resistance, 3rd pin is connected to the anode of the 11 light emitting diode by the 22 resistance, 4th pin is connected to the anode of the 12 light emitting diode by the 23 resistance, 5th pin is connected to the anode of the 13 light emitting diode by the 24 resistance, 6th pin is connected to the anode of the 14 light emitting diode by the 25 resistance, 7th pin is connected to the anode of the 15 light emitting diode by the 26 resistance, 8th pin is connected to the anode of the 16 light emitting diode by the 27 resistance, the negative electrode of the 9th light emitting diode, the negative electrode of the tenth light emitting diode, the negative electrode of the 11 light emitting diode, the negative electrode of the 12 light emitting diode, the negative electrode of the 13 light emitting diode, the negative electrode of the 14 light emitting diode, the negative electrode of the 15 light emitting diode and the equal ground connection of negative electrode of the 16 light emitting diode,
9th pin ground connection of darlington transistor array, 10th pin of darlington transistor array connects power supply, 11st pin of darlington transistor array is connected to the 1st pin of the 8th relay, 12nd pin of darlington transistor array is connected to the 1st pin of the 7th relay, 13rd pin of darlington transistor array is connected to the 1st pin of the 6th relay, 14th pin of darlington transistor array is connected to the 1st pin of the 5th relay, 15th pin of darlington transistor array is connected to the 1st pin of the 4th relay, 16th pin of darlington transistor array is connected to the 1st pin of the 3rd relay, 17th pin of darlington transistor array is connected to the 1st pin of the second relay, 18th pin of darlington transistor array is connected to the 1st pin of the first relay,
Resistance eutral grounding is overcharged described in 8th pin of the first relay passes through, 6th pin of the first relay is connected to the 4th pin of the second relay, 4th pin of the first relay meets P1, and the 16th pin of the first relay connects power supply, the first relay the 9th, 11,13 pins are all unsettled does not connect; 6th pin of the second relay is by described normal resistance ground connection, and the 8th pin of the second relay is by described overdischarge resistance ground connection, and the 16th pin of the second relay meets power supply VCC, the second relay the 9th, 11,13 pins are all unsettled does not connect; Resistance eutral grounding is overcharged described in 8th pin of the 3rd relay passes through, 6th pin of the 3rd relay is connected to the 4th pin of the 4th relay, 4th pin of the 3rd relay meets P2, and the 16th pin of the 3rd relay connects power supply, the 3rd relay the 9th, 11,13 pins are all unsettled does not connect; 8th pin of the 4th relay is by described overdischarge resistance ground connection, and the 6th pin of the 4th relay is by described normal resistance ground connection, and the 16th pin of the 4th relay connects power supply, the 4th relay the 9th, 11,13 pins are all unsettled does not connect; Resistance eutral grounding is overcharged described in 8th pin of the 5th relay passes through, 6th pin of the 5th relay is connected to the 4th pin of the 6th relay, 4th pin of the 5th relay meets P3, and the 16th pin of the 5th relay connects power supply, the 5th relay the 9th, 11,13 pins are all unsettled does not connect; 8th pin of the 6th relay is by described overdischarge resistance ground connection, and the 6th pin of the 6th relay is by described normal resistance ground connection, and the 16th pin of the 5th relay meets power supply VCC, the 6th relay the 9th, 11,13 pins are all unsettled does not connect; Resistance eutral grounding is overcharged described in 8th pin of the 7th relay passes through, 6th pin of the 7th relay is connected to the 4th pin of the 8th relay, 4th pin of the 7th relay meets P4, and the 16th pin of the 7th relay connects power supply, the 7th relay the 9th, 11,13 pins are all unsettled does not connect; 8th pin of the 8th relay is by described overdischarge resistance ground connection, and the 6th pin of the 8th relay is by normal resistance ground connection, and the 16th pin of the 8th relay connects power supply, the 8th relay the 9th, 11,13 pins are all unsettled does not connect.
6. simulated battery circuit as claimed in claim 1, it is characterized in that, described display circuit comprises: the second rectifier bridge, the second inductance, three terminal regulator, the tenth electric capacity, the 11 electric capacity, the 12 electric capacity, the 30 resistance, the 31 resistance, the 32 resistance, the 33 resistance, the 6th light emitting diode and the 7th light emitting diode;
The input end of three terminal regulator is connected with the second rectifier bridge by the second inductance, and the input end of three terminal regulator is also by the tenth capacity earth, and the 11 electric capacity is connected with the tenth Capacitance parallel connection;
The output terminal of three terminal regulator is connected to the electric discharge negative terminal of battery protecting plate, the output terminal of three terminal regulator is also by the first capacity earth, 31 resistance and the 30 resistance are sequentially connected in series between the output terminal and ground of three terminal regulator, and the 31 resistance is also connected with the ground end of three terminal regulator with the end that is connected in series of the 30 resistance; The plus earth of the 6th light emitting diode, the anode of the 6th light emitting diode connects the charging negative terminal of battery protecting plate by the 32 resistance; The plus earth of the 7th light emitting diode, the anode of the 7th light emitting diode is connected to the battery negative terminal of battery protecting plate by the 33 resistance.
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| CN104062515A (en) * | 2013-03-18 | 2014-09-24 | 深圳市铂飞特启动电池技术有限公司 | Lithium ion battery protective plate tester applied to automobile starting |
| CN106645833A (en) * | 2015-11-04 | 2017-05-10 | 江苏嘉钰新能源技术有限公司 | Battery voltage simulator used for debugging battery management system |
| CN106646009A (en) * | 2015-11-04 | 2017-05-10 | 江苏嘉钰新能源技术有限公司 | Electric vehicle battery management system testing device simulation battery device |
| CN105911458B (en) * | 2016-05-18 | 2018-12-07 | 康泰医学系统（秦皇岛）股份有限公司 | A kind of battery analogue circuit |
| CN106771744A (en) * | 2016-12-19 | 2017-05-31 | 江苏嘉钰新能源技术有限公司 | A kind of battery simulating device |
| US10559954B2 (en) * | 2017-04-04 | 2020-02-11 | Semiconductor Components Industries, Llc | Methods and apparatus for voltage and current calibration |
| CN107831389B (en) * | 2017-11-03 | 2020-01-14 | 欣旺达电子股份有限公司 | 0V charging function test method and circuit |
| CN108594128A (en) * | 2018-04-24 | 2018-09-28 | 上海与德科技有限公司 | Test equipment, the method and system of battery short circuit |
| CN109217261B (en) * | 2018-09-30 | 2019-12-17 | 缙云县锐普电子科技有限公司 | lithium battery system |
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